Made From High Quality Titanium Coated HSS (High Speed Steel). Supplied in a plastic case with a convenient carry handle. Perfect for home DIY and general building / engineering use. Specifications: Model: 1.5-10mm Material: High Speed Steel Color:Golden&Silver Quantity: 99pcs 16 x 1.5mm; 16 x 2mm; 15 x 2.5mm; 10 x 3mm; 10 x 3.2mm; 8 x 3.5mm; 8 x 4mm; 3 x 4.5mm; 3 x 5mm; 2 x 5.5mm; 2 x 6mm; 2 x 6.5mm; 2 x 8mm; 2 x 10mm Diameter: 1.5mm-10mm/0.059- 0.393" Drill Bits Total Length: 40-133mm/1.574- 5.236" Box Size: Approx. 23x21x3.5cm/9.05x8.26x1.37"